Where does “jeg” come from?

jeg (Norwegian Bokmål) comes from Danish jeg, from Old Swedish iak, from Old Norse ek, from Proto-Norse ᛖᚲ, from Proto-Germanic *ek, from Proto-Indo-European éǵh₂ — I.

jeg (Norwegian Bokmål): I

Definitions

Ancestry of “jeg”, step by step

Step	Language	Word	Meaning
1	Danish	jeg	I; self; I, ego
2	Old Swedish	iak	I
3	Old Norse	ek	I
4	Proto-Norse	ᛖᚲ	I
5	Proto-Germanic	*ek	—
6	Proto-Indo-European	éǵh₂	I

Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Germanic *ek →Every word from Proto-Norse ᛖᚲ →